Acetylene-gas burner.



No. 634,838. Patented Oct. 10, I399.

* H. E. SHAFFER.

ACETYLENE GAS BURNER.

(Applicntion filed Apr. 8 1899.) (Ila Modal.)

we "cams 9:11;: no" mum-M1140 WMNGTON n c UNITED STATES I PATENT OFFICE.

HENRY E. SHAFFER, OF ROCHESTER, NEW YORK.

ACETYLENE-GAS BU RNER.

SPECIFICATION forming part of Letters Patent No. 684,838, dated October10, 1899. A gmcmm filed April 8, 1899 SerialNo. 712,267. (No me.)

fiat flame, such as have heretofore been made.

entire of metal and also'with metal arms and separable refractory tips.

My improved burner is fully described and illustrated in the followingspecification and the accompanying drawings, the novel fea tures thereofbeing specified in the claims annexed to thesaid specification.

In the accompanying drawings, represent ing my improved gas-burner,Figure 1'is a side elevation. Fig. 1 is an enlarged central verticalsection of Fig. 1. Fig. 2 is a central vertical section. Fig. 3 is apartial side view as seen from the direction of the arrows in Figs. 1and 2. Figs. 4 and 5 represent a modification, the latter figure being apartial section on the line 5 5, Fig. 4:.

My improved burner has a body consisting of the hollow central stem A,having the gassupply passage 0. B B are two hollow diver gent arm shaving gas-passages D. D, which are divergent and communicate with theminute convergent gas-exit orifices F F.

A gas-supply tube is denoted by T.

E E denote air-supply passages which, as shown in Figs. 1 and 1, areformed by boring through the material between the gas-exits and theoutlet from the mixing-chambers N N. In Figs. 2 and 5 theair-passagesEand E are formed by boringfrom the rear of the arms B B through themixing-chambers and are contracted at H R and H B, respectively.

In a modification represented in Figs. 4 and 5 two or more openings J .IJ lead the air from .thepassage E to the passage N, into which the gasis delivered from the orifice F.

The air-supply passages delive'r air to airand-gas-mixing chambers N Nadjacent the gas-exits. The said chambers are partially bounded on theirproigim ate sides by the faces -L L. In use the burner produces a fiatflame at 0. To insure this form of flame, it is nec essary that the jetsof gas from the two exits accurately impinge as in other well knownburners having opposite gas-exits adapted for the production of a singlefiat flame.

Especial nicety and accuracy of construction are required inacetylene-burners on account of the minute size of the gas-exits and theconsequent fineness of the gas=jets.

In burners of the same general form having refractory tips it has beenfound impracticable to cement the tips in the metal burner,-

arms so as to insure a suitable alinementof the gas .exits and jets. Itis therefore the practice .to light every such burner and adjust thetips after they have been-cemented in the metal burner-arms by twistingor bending the arms by means of a suitable tool, and thus experimentallysecure an adjustment suitable for the production of the desired form offlame. The practice is general and is not only troublesome, butinefficient, for the reason that the'high heat to which the burners aresubjected in use causes the twisted or bent metal to return toward itsoriginal position,

whereby the gas-exits are thrown out of proper relation and. the flamechanged in form.

My improvement provides, by makingthe burner body and arms of'one pieceof nonmetallic refractory materiahthat the gas-exits can be properlyformed and arranged to produce the desired form of flame withcertaintyand without testing and altering, as in the case of compositeburners, and without danger of subsequent torsion by high heat. Suchimproved burners can also be made much cheaper than metal burners withrefractory flame, the object being to remedy the beforementioned defectin such burners;

' Having thus described my invention, what I claim is- 1. The hereindescribed double jet gasburner made entire of a single piece ofrefractory material with divergent arms having diverging gas passagesand converging gas exits and suitable air-passages all as set forth, toinsure and maintain the proper form of the flame.

2. lhe herein described double jet gasburner made entire of a singlepiece of refractory material with divergent arms having divergent gaspassages and converging gasexits and suitable air-passages all as setforth to insure and maintain the proper form of the flame, saidair-passages leading to mixing- HENRY E. SHAFFER.

\Vitnesses:

GEO. WILsON, H. G. 1-1. Ooornn.

